****Please Help****

I'm in week five of flowering and have one plant with a large amount of light green to yellow leaves, the buds seam fine but the yellowing has me worried.
Is this a salt build up or a calcium & magnesium deficiency? PLEASE HELP

The yellowing is normal as in flower your feeding schedule takes away the nitrogen which makes a plant green and ups the potassium levels to promote the flowering stage so you will get yellow leaves, dry leaves and some leaf droppage...Sincerely FilthyFletch

So why are the other four showing no signs of yellowing they have some burn tips and edges but other than that there still very green this plant is the only one that is yellowing.

Are they clone or seed? If they were clone they might react at the same time but seeds each plant will vary in it genetics and how it processes food during photosynthesis.It looks like they are in differnt position under the light and in differnt netpot which can effect each plant too as more light equals faster photosynthesis which helps the plants use less energy so the stored nitrogen isnt used as fast.Mister or watering position can influence it also from plant to plant..FilthyFletch

These are from clones have four planet in the same room on the same watering schedule. There in the same position under the light and get rotated daily. The pic's I posted are of he plant in question not of all four.

are they in the same pot or in indiviual pots? From the looks of the plant it looks completely normal of a 5 week flowering plant.I have seen this for the 15 years or so Ive grown so it doesnt show any real issue to me

There in individual pots!